Description

[4-(4-Phosphonophenyl)phenyl]phosphonic acid (CAS No. 13817-79-3) is a high-purity, biphenyl-based diphosphonic acid compound with the molecular formula C₁₂H₁₂O₆P₂. This versatile organophosphorus reagent is widely utilized in material science, coordination chemistry, and surface modification due to its dual phosphonic acid functional groups, which enable strong chelation with metal ions and robust adhesion to oxide surfaces. Its rigid biphenyl backbone enhances thermal and chemical stability, making it ideal for applications in metal-organic frameworks (MOFs), self-assembled monolayers (SAMs), and catalysis. Available in ≥95% purity (HPLC), this product is supplied as a white to off-white crystalline powder, ensuring consistent performance in research and industrial applications. Store in a cool, dry place under inert conditions to maintain stability.

Properties

• CAS Number: 13817-79-3
• Complexity: 372
• IUPAC Name: [4-(4-phosphonophenyl)phenyl]phosphonic acid
• InChI: InChI=1S/C12H12O6P2/c13-19(14,15)11-5-1-9(2-6-11)10-3-7-12(8-4-10)20(16,17)18/h1-8H,(H2,13,14,15)(H2,16,17,18)
• InChI Key: QWSZMKCGMDROKE-UHFFFAOYSA-N
• Exact Mass: 314.01091209
• Molecular Formula: C12H12O6P2
• Molecular Weight: 314.17
• SMILES: C1=CC(=CC=C1C2=CC=C(C=C2)P(=O)(O)O)P(=O)(O)O
• Topological: 115
• Monoisotopic Mass: 314.01091209
• Synonyms: 13817-79-3, [4-(4-phosphonophenyl)phenyl]phosphonic acid, biphenyl-4,4′-diphosphonic acid, Phosphonic acid, P,P’-[1,1′-biphenyl]-4,4′-diylbis-, biphenyl-4,4′-diylbis(phosphonic acid), [1,1′-Biphenyl]-4,4′-diylbis(phosphonic acid), 4,4′-biphenylenebisphosphonic acid, MFCD00968649, NSC129448, 4,4′-biphenyldiphosphonic acid, biphenyl-4,4-diphosphonic acid, SCHEMBL4953765, YSZC1234, 4,4′-biphenyl-diphosphonic acid, DTXSID10299327, QWSZMKCGMDROKE-UHFFFAOYSA-N, 4,4′-(biphenyl) diphosphonic acid, 4,4-biphenylenebis(phosphonic acid), BBL103238, STL557048, AKOS017345056, NSC-129448, CS-0182998, G64641, 10.14272/QWSZMKCGMDROKE-UHFFFAOYSA-N.1, doi:10.14272/QWSZMKCGMDROKE-UHFFFAOYSA-N.1

This compound serves as a key linker in the synthesis of metal-organic frameworks (MOFs) for gas storage and catalysis. It is also employed in surface functionalization of metal oxides (e.g., TiO₂, ITO) for optoelectronic devices due to its strong binding affinity. Researchers use it to develop proton-conductive materials in fuel cell membranes. Additionally, it acts as a corrosion inhibitor and adhesion promoter in coatings.

If you are interested or have any questions, please contact us at support@atomfair.com

Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.